Anyone know how to set up the RVT landscape material in a way that I can do a landscape painting on?

Hi Unreal forum,

I would like to ask for a help on landscape material - I am trying to set up my material in the way that it will be able to accept RVT spline projections, which it can be seen on the first image (the path is the spline tool that projects RVT)I chose RVT splines because it helps me get the path flow in a proper way instead of landscape painting on that. However, because I did this approach, my old landscape painting work is now impossible to do as it is showing all black.

Below is my set up, and I want to achieve something like the second image here, the second image is when I don’t have RVT nodes set it up:


Let me know if I can provide more information to help the assessment. Thank you in advance!